package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.commen.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;
    /**
     * 员工登录
     * @return
     */
    //员工登录
    //HttpServletRequest request是为了后面要用session做准备
@PostMapping("/login")
public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee) {
    //1、将页面提交的密码password进行md5加密处理
    String password = employee.getPassword();
    password = DigestUtils.md5DigestAsHex(password.getBytes());

    //2、根据页面提交的用户名username查询数据库
    LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(Employee::getUsername,employee.getUsername());
    Employee emp = employeeService.getOne(queryWrapper);
    //3、如果没有查询到则返回登录失败结果
    if(emp==null){
        return R.error("登录失败");
    }

    //4、密码比对，如果不一致则返回登录失败结果
    if(!emp.getPassword().equals(password)){
        return R.error("登录失败");
    }

    //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
    if(emp.getStatus().equals(0)){
        return  R.error("员工都没了，你想啥呢");
    }

    //6、登录成功，将员工id存入Session并返回登录成功结果
request.getSession().setAttribute("employee",emp.getId());
    return R.success(emp);

}
    //员工退出
    @PostMapping("/logout")
public R<String> logout(HttpServletRequest request) {
    //清理session中保存的当前登录员工的id
request.getSession().removeAttribute("employee");
return R.success("退出成功");
}

/*根据id修改员工信息*/
    @PostMapping
public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
    log.info("新增员工，员工信息：{}",employee.toString());
        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //编写完了元数据对象处理器之后，我们就可以将之前在新增和修改方法中手动赋值的代码删除或注释掉。
/*        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户的id
       Long empId= (Long) request.getSession().getAttribute("employee");
       employee.setCreateUser(empId);
       employee.setUpdateUser(empId);*/
       employeeService.save(employee);

        return R.success("新增员工成功");
}

/*员工信息分页查询*/
@GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
log.info("page={},pageSize={},name={}",page,pageSize,name);
//构造分页构造器
    Page pageInfo = new Page(page, pageSize);
    //构造条件构造器
    LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
    //添加过滤条件
    queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
    //添加排序条件
    queryWrapper.orderByDesc(Employee::getUpdateTime);
    //执行查询
    employeeService.page(pageInfo,queryWrapper);
    return R.success(pageInfo);

    }
//根据id修改员工信息
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
    log.info(employee.toString());
     //编写完了元数据对象处理器之后，我们就可以将之前在新增和修改方法中手动赋值的代码删除或注释掉。
/*        Long empId = (Long) request.getSession().getAttribute("employee");
    employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);*/
        employeeService.updateById(employee);
    return R.success("员工修改信息成功");
    }


    //根据id查询员工信息
@GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
    log.info("根据id查询员工信息");
    Employee employee = employeeService.getById(id);
    //防止多用户登录，有人删除了数据
    if (employee != null) {
        return R.success(employee);
    }
    return R.error("没有查询到对应员工信息");
}
}
